1. Peptic ulcer  (Trust Mark: Doctor-Reviewed)
A peptic ulcer is erosion in the lining of the stomach or the first part of the small intestine, an area called the duodenum. If the peptic ulcer is located in the stomach it is called a gastric ulcer.• Reviewer: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Medical Tests  (Trust Mark: Doctor-Reviewed)
Evaluations done to provide information on health and to assist in identification of a condition or diagnosis of disease or injury. Medical tests are used to provide information to health care providers about a person's health status. Some tests r...